Nutrafin Ammonia Reagent #2 Refill, for freshwater and saltwater. 15 ml

Nutrafin Ammonia Reagent 2 Refill, use with Ammonia Test Kit (0.0-6.1 mg/L) for freshwater and saltwater. Weekly ammonia test indicates if the performance of the biological filter is effective, and if the amount of ammonia reaches a dangerous level.